Destructive Gemstone Testing
Destructive gemstone testing, done carefully, can help gemologists with difficult gem identifications. Learn the right techniques with our…
Destructive gemstone testing, done carefully, can help gemologists with difficult gem identifications. Learn the right techniques with our…
Did you know most gem species can be distinguished without the element of color? Learn the role gemstone colors play in gem identification.
Although lapidaries can cut cabochons and decorative objects from massive or translucent eudialyte crystals, transparent material suitable…
How does faceting affect gem value? Custom-cut gemstones are unique pieces and command a high price. Learn how custom cutting compares to factory…
How does the GemEx iLoupe compare to a standard jeweler’s loupe? Our review tests the device and app, designed for smartphones and tablets.
Disclosing enhancements to gems is a key duty for gemologists. Learn what are the hardest treatments to detect and how to report your findings clearly.…
For millennia, artisans have carved intricate cameos from black-and-white onyx. Solid black onyxes, faceted or cabbed, are also popular jewelry…
Jade is one of the most popular and expensive gemstones. It can also receive many enhancements. Learn about jade treatments and how to identify…
The crossed filters technique allows gemologists to detect chromium in gems. Learn how to build a portable device for conducting this useful ID…